Charleston, IL Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Charleston, IL in one place.
A slight chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny, with a high near 81. South southwest wind around 24 mph, with gusts as high as 44 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Charleston, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jun 17, 2026 6:51 PM CDT.
The active forecast window currently covers Jun 17 to Jun 23, 2026 for Charleston, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 17 to Jun 23, 2026
- Latest sync
- Jun 17, 2026 6:51 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Charleston
This Afternoon looks like the warmest upcoming period in Charleston at 81 degrees F.
Thursday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for This Afternoon at about 24 mph SSW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 17, 2026 6:51 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms before 1am. Some of the storms could be severe and produce heavy rain. Mostly cloudy, with a low around 64. West southwest wind 9 to 22 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Mostly sunny, with a high near 75. West northwest wind around 10 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 57. Northwest wind 2 to 7 mph.
Sunny, with a high near 78. West northwest wind 2 to 6 mph.
Partly cloudy, with a low around 61. West southwest wind 0 to 5 mph.
Mostly sunny, with a high near 81. Southwest wind around 6 mph.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Showers and thunderstorms. Partly sunny, with a high near 79. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 63.
A chance of rain showers before 1pm. Partly sunny, with a high near 76.
Partly cloudy, with a low around 57.
Mostly sunny, with a high near 78.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 59.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jun 17
|
Slight Chance Showers And Thunderstorms
|
81°F |
24 mph
SSW
|
|
Tonight
Jun 17
|
Showers And Thunderstorms
|
64°F |
9 to 22 mph
WSW
|
|
Thursday
Jun 18
|
Mostly Sunny
|
75°F |
10 mph
WNW
|
|
Thursday Night
Jun 18
|
Mostly Clear
|
57°F |
2 to 7 mph
NW
|
|
Juneteenth
Jun 19
|
Sunny
|
78°F |
2 to 6 mph
WNW
|
|
Friday Night
Jun 19
|
Partly Cloudy
|
61°F |
0 to 5 mph
WSW
|
|
Saturday
Jun 20
|
Mostly Sunny
|
81°F |
6 mph
SW
|
|
Saturday Night
Jun 20
|
Partly Cloudy then Chance Showers And Thunderstorms
|
63°F |
5 mph
S
|
|
Sunday
Jun 21
|
Showers And Thunderstorms
|
79°F |
6 to 12 mph
SE
|
|
Sunday Night
Jun 21
|
Showers And Thunderstorms
|
63°F |
12 mph
WNW
|
|
Monday
Jun 22
|
Chance Rain Showers
|
76°F |
13 mph
NNW
|
|
Monday Night
Jun 22
|
Partly Cloudy
|
57°F |
5 to 12 mph
NNE
|
|
Tuesday
Jun 23
|
Mostly Sunny
|
78°F |
6 mph
ENE
|
|
Tuesday Night
Jun 23
|
Slight Chance Showers And Thunderstorms
|
59°F |
3 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Charleston.
